i have a Walbro 255 laying around do i need a tune if i install it?

 

no you won't. just install it, you may run a little richer. your fpr should do what it's supposed to do. but do get a tune soon.

 

get a tune shortly after. you will run a little rich

 

Get a tune sooner rather than later. Do you have any other mods laying around or are planning on doing?! If so wait for a tune until those parts are installed.

 

It wont affect idle or cruise but in most cases your full throttle/full boost AFR is going to be fairly rich, as in rich enough to lose power. It wont damage anything but the car wont be near its potential.

 

+1

255 for IX is not the most critical mod without a tune… but to get your car running correctly, all mods should undergo a tune.

But a tune just for fuel pump seems like a bit of a waste.

get some additional mods to make the tune worth while.

obviously you upgraded a fuel pump to cater for adding more power… its a matter of time until you decide you want more power & mods…

 

i have a mis fire and a problem staring so got a 255 from a friend just to test it out

 

Not really.